# StableEmail List Inbox Messages

> StableEmail List Inbox Messages is a paid API for AI agents from StableEmail at stableemail.dev, paid per call via MPP or x402, $0.001/call, status unknown (last checked 2026-10-10).

Lists messages in a StableEmail forwarding inbox by username, with optional pagination

## Facts

- Endpoint: POST https://stableemail.dev/api/inbox/messages?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP, x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Provider: StableEmail
- Docs: https://stableemail.dev
- Website: https://stableemail.dev
- Tags: email, send, inbox, forwarding, subdomain, social
- Canonical page: https://www.zero.xyz/c/stableemail-messages-b8055b4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HOk8now0d2o1t3n8h6PdN

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability stableemail-messages-b8055b4a -d '<json body>'
```

Example prompt: Show me the latest 20 messages in my StableEmail inbox for username 'my-project-bot'.

## When to prefer this

Use this endpoint when you need to programmatically list or poll messages in a StableEmail inbox without needing to read full message content. Prefer this over the Read endpoint when you only need a summary list of messages rather than full body/attachments of a specific message. Ideal for monitoring, building inbox dashboards, or selecting which messages to read next.

## Known failure modes

- Invalid username format (must match pattern ^[a-z0-9][a-z0-9-]{1,28}[a-z0-9]$ with no consecutive hyphens) returns validation error
- Username does not exist or has expired inbox returns not found error
- Invalid cursor token returns pagination error
- Limit out of range (must be 1–100) returns validation error
- Insufficient payment balance returns 402 Payment Required
- Network timeout returns 5xx error

## How this service works

List messages in your inbox ($0.001)

## Output

Returns a paginated list of inbox messages for the specified username, including metadata for each message (such as sender, subject, timestamp). A cursor token may be included for fetching additional pages of results.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "username"
 ],
 "properties": {
  "limit": {
   "type": "integer",
   "default": 20,
   "maximum": 100,
   "minimum": 1
  },
  "cursor": {
   "type": "string",
   "minLength": 1
  },
  "username": {
   "type": "string",
   "allOf": [
    {
     "pattern": "^[a-z0-9][a-z0-9-]{1,28}[a-z0-9]$"
    },
    {
     "pattern": "^(?!.*--)"
    }
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stableemail-messages-b8055b4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stableemail.dev](https://www.zero.xyz/host/stableemail.dev/llms.txt)